The Battle for Earth - S1.E39

VenomMyotismon is defeated after he exposes his weak point, which WarGreymon and MetalGarurumon exploit. The fog clears to reveal the Digital World reflected in the sky, and the DigiDestined realize that the boundaries between both worlds have begun to intersect, as years have passed in the Digital World since their departure. The DigiDestined decide to return to the Digital World, leaving their families.